I think if we could emulate the human circulatory system and think of cars as red blood cells and veins/arteries as rail system. We have the majority of basic infra structure in USA. The basics being -utilize the current system of highways to build a rail system above and in the middle of the highway that lets cars/trucks get on and off easily to the more efficient train. You would park your car on the train and have a lunch while you zoomed across America. You have freedom of choice by getting off the train with your own vehicle and doing what you will. You would still have the highway to accommodate the old style cars and trucks. Then there could be a reasonable functional-ability of a little battery car that will go 200 miles per charge. Big semi-trucks would only haul trailers from train depot to destination. The technology and engineering of the train would of course depend on the high speed chair lift mechanism and a couple straps of graphene.
